This is Atlas Copco part number 3371820703 O-Ring, stocked at Crowder Supply as AC-3371820703. It keeps air or oil where it belongs inside the breaker. Once it flattens or hardens, the machine loses pressure across the joint and performance falls off gradually rather than all at once.
The published breakdown lists it on the BRK 55 55VR 55VR HBP 55 HBP Hydraulic Paving Breaker and PDR 95T 95RV Hydraulic Post Driver, and on 14 other machines. Compare it to the reference callout on the diagram to be sure it is the position you need.
Use the parts diagram library to work through the rest of the assembly, or the Atlas Copco tool range if you are pricing a replacement machine. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 3371820703
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3371820703
- Listed on breakdowns for: BRK 55 55VR 55VR HBP 55 HBP Hydraulic Paving Breaker, PDR 95T 95RV Hydraulic Post Driver, PDR 75T 75RV Hydraulic Post Driver, MH55 55A HBP Hydraulic Paving Breaker, MH70 70A HBP Hydraulic Paving Breaker, MDR 75T HBP 75 RV HBP Hydraulic Post Driver, +10 more
